AME
AME8801 / 8812 / 8840
n
General Description
The AME8801/8812/8840 family of positive, linear regu-
lators feature low quiescent current (30µA typ.) with low
dropout voltage, making them ideal for battery applica-
tions. The space-saving SOT-25/TSOT-25 & SOT-26/TSOT-
26 packages are attractive for "Pocket" and "Hand Held"
applications.
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under the
"Worst" operating conditions.
In applications requiring a low noise, regulated supply,
place a 1000 pF capacitor between Bypass and Ground.
The AME8801 is stable with an output capacitance of
2.2µF or greater.
300mA CMOS LDO
n
Functional Block Diagram
IN
Overcurrent
Shutdown
OUT
Thermal
Shutdown
EN
BYP
AMP
R1
V
ref
=1.215V
R2
GND
n
Features
l
Very Low Dropout Voltage
l
Guaranteed 300mA Output
l
Accurate to within 1.5%
l
30µA Quiescent Current
l
Over-Temperature Shutdown
l
Current Limiting
l
Short Circuit Current Fold-back
l
Noise Reduction Bypass Capacitor
l
Power-Saving Shutdown Mode
l
Space-Saving SOT-25/TSOT-25, SOT-26/
TSOT-26 Packages
l
Factory Pre-set Output Voltages
l
Low Temperature Coefficient
l
All AME's Lead Free Product Meet RoHS
Standards
C1
1µF
C2
1000pF
INPUT
IN
n
Typical Application
AME8801
OUT
AME8812
AME8840
GND
EN
OUTPUT
BYP
C3
2.2µF
n
Applications
l
Instrumentation
l
Portable Electronics
l
Wireless Devices
l
Cordless Phones
l
PC Peripherals
l
Battery Powered Widgets
Rev.S.02
1
AME
AME8801 / 8812 / 8840
n
Pin Configuration
SOT-25/TSOT-25
Top View
5
4
300mA CMOS LDO
SOT-26/TSOT-26
Top View
AME8801
1. IN
2. GND
6
5
4
AME8801
1. OUT1
2. GND
AME8801
3. EN
4. BYP
5. OUT
AME8801
3. BYP
4. EN
5. IN
1
2
3
1
2
3
6. OUT2
* Die Attach:
Non-Conductive Epoxy
* Die Attach:
Conductive Epoxy
SOT-25/TSOT-25
Top View
5
4
SOT-25/TSOT-25
Top View
AME8812
1. EN
2. GND
5
4
AME8840
1. EN
2. GND
AME8812
3. IN
4. OUT
5. BYP
AME8840
3. BYP
4. OUT
5. IN
1
2
3
1
2
3
* Die Attach:
Conductive Epoxy
* Die Attach:
Conductive Epoxy
n
Pin Description
Pin Name
IN
GND
EN
Pin Description
Input voltage pin.
It should be decoupled with 1
µ
F or greater capacitor.
Ground connection pin.
Enable pin.
When pulled low, the PMOS pass transistor turns off, current consuming less
than 1µA.
Bypass capacitor connection.
To improve AC ripple rejection, connect a capacitor to GND.
This will also provide a soft-start function.
LDO voltage regulator output pin.
It should be decoupled with a 1µF or greater value low ESR ceramic capacitor.
BYP
OUT
2
Rev.S.02
AME
AME8801 / 8812 / 8840
n
Ordering Information
Part Number
AME88012EEV
AME88012EEVL
AME88012EEVZ
AME88012EEVY
AME8801AEEV
AME8801AEEVL
AME8801AEEVZ
AME8801AEEVY
AME8801BEEV
AME8801BEEVL
AME8801BEEVZ
AME8801BEEVY
AME8801CEEV
AME8801CEEVL
AME8801CEEVZ
AME8801CEEVY
AME8801DEEV
AME8801DEEVL
AME8801DEEVZ
AME8801DEEVY
AME8801EEEV
AME8801EEEVL
AME8801EEEVZ
AME8801EEEVY
AME8801FEEV
AME8801FEEVL
AME8801FEEVZ
AME8801FEEVY
300mA CMOS LDO
Marking*
AWKww
AWKww
AWKww
AWKww
AAFww
AAFww
AAFww
AAFww
AAGww
AAGww
AAGww
AAGww
AAHww
AAHww
AAHww
AAHww
AAIww
AAIww
AAIww
AAIww
AAJww
AAJww
AAJww
AAJww
ABOww
ABOww
ABOww
ABOww
Output Voltage
2.0V
2.0V
2.0V
2.0V
3.3V
3.3V
3.3V
3.3V
3.0V
3.0V
3.0V
3.0V
2.8V
2.8V
2.8V
2.8V
2.5V
2.5V
2.5V
2.5V
3.8V
3.8V
3.8V
3.8V
3.6V
3.6V
3.6V
3.6V
Package
SOT-25
TSOT-25
SOT-25
TSOT-25
SOT-25
TSOT-25
SOT-25
TSOT-25
SOT-25
TSOT-25
SOT-25
TSOT-25
SOT-25
TSOT-25
SOT-25
TSOT-25
SOT-25
TSOT-25
SOT-25
TSOT-25
SOT-25
TSOT-25
SOT-25
TSOT-25
SOT-25
TSOT-25
SOT-25
TSOT-25
Operating Ambient
Temperature Range
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
- 40
o
C to +85
o
C
Note: ww represents the date code and pls refer to Date Code Rule on Package Dimension.
* A line on top of the first letter represents lead free plating such as AWKww.
Please consult AME sales office or authorized Rep./Distributor for the availability of package type.
4
Rev.S.02
PCB设计
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